Would toric contact lens cause vision distortion, if I read books, lying down on the bed?

I have around -0.75 Dioptre Spherical and -1.25 Dioptres Cylindrical power in my eyes.

I was thinking of shifting to toric contact lenses. (Cooper Vision Frequency Excel Toric).

I have a question: Would I face problems, if I read books, lying down on the bed? Because, I've heard that toric contact lenses use the power of gravity to keep them straight in the eyes, without changing the desired axis of the cylindrical power.

Would these lenses work, while I'm reading, lying down on the bed?
>>> Would toric contact lens cause vision distortion, if I read books, lying down on the bed?